A client receives a prescription for a single dose of midazolam 2 mg IV to be administer before a scheduled procedure. The vial is label, *4 mg/2 mL." How many mL should the nurse administer? (Enter numerical value only.)

Here's the breakdown: Prescribed dose: 2 mg midazolam (given) Vial concentration: 4 mg/2 mL (label) We need to find the volume containing the 2 mg dose considering the concentration. Calculation: Volume (mL) = Dose (mg) / (Concentration (mg/mL) / 2) We divide the concentration by 2 because we need the volume that delivers 2 mg (half the concentration). Volume (mL) = 2 mg / (4 mg/mL / 2) Volume (mL) = 2 mg / 2 mg/mL Volume (mL) = 1 mL Therefore, the nurse should administer 1 mL of midazolam to deliver the prescribed dose of 2 mg.